500 mA fast-blow fuse for tight overcurrent protection
The F1206B0R50FWTR is a 500 mA fast-blow surface-mount fuse from KYOCERA AVX's Accu-Guard® II series, housed in the compact 1206 (3216 metric) package. Its low melting I²t of 0.0002 A²s means it clears quickly on a hard short, limiting the energy let-through to downstream silicon.
63 V DC rating and cold resistance
Rated for 63 V DC continuous, this fuse suits low-voltage DC rails common in telecom, industrial control, and portable equipment. The 0.35 Ω cold resistance keeps voltage drop and self-heating low at the rated 500 mA load. Breaking capacity is 50 A at the rated voltage — adequate for most secondary-side protection where the prospective short-circuit current stays below that level.
Wide temperature range and approvals
It carries cUL and UL recognition, easing compliance for North American safety listings.